Dental Assisting Question Answer 2022
Added on 2022-10-17
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Running head: DENTAL
Dental Assisting
Name of the Student
Name of the University
Author’s Note
Dental Assisting
Name of the Student
Name of the University
Author’s Note
1
DENTAL
1. There are several different types of dental radiation. List each type and, in your
own words, provide an explanation of each.
Ans- There are two main types of dental X-Rays – Intraoral X-Rays and Extraoral X-Rays
The intraoral X-rays have following types-
Bitewing X-Rays- It is the type of X-Ray that reveals the details of upper and lower teeth,
crown, and other restorations, and informs about decay of teeth, gum disease.
Periapical X-Rays- It shows the whole structure from the tooth to the crown and surpassing
root.
Occlusal X-Rays- It depicts the anatomy and development of entire teeth arch in either of the
jaws.
The Extraoral X-Rays consists of-
Panoramic X-rays- It can reveal the complete dental structure along with tumors, if any.
Tomograms- Emphasizes on a certain part of mouth and blurs the other section.
Cephalometric projections- It exposes the teeth profile with respect to jaw on an entire
portion of head.
Dental Computed tomography (CT) - Provides a 3-D view of internal structures.
Cone Beam CT- Produces 3-D images of teeth, bone, nerves or tissues in the aligned area.
Digital imaging- It uses 2D imaging mainly, but can be uploaded in a computer.
DENTAL
1. There are several different types of dental radiation. List each type and, in your
own words, provide an explanation of each.
Ans- There are two main types of dental X-Rays – Intraoral X-Rays and Extraoral X-Rays
The intraoral X-rays have following types-
Bitewing X-Rays- It is the type of X-Ray that reveals the details of upper and lower teeth,
crown, and other restorations, and informs about decay of teeth, gum disease.
Periapical X-Rays- It shows the whole structure from the tooth to the crown and surpassing
root.
Occlusal X-Rays- It depicts the anatomy and development of entire teeth arch in either of the
jaws.
The Extraoral X-Rays consists of-
Panoramic X-rays- It can reveal the complete dental structure along with tumors, if any.
Tomograms- Emphasizes on a certain part of mouth and blurs the other section.
Cephalometric projections- It exposes the teeth profile with respect to jaw on an entire
portion of head.
Dental Computed tomography (CT) - Provides a 3-D view of internal structures.
Cone Beam CT- Produces 3-D images of teeth, bone, nerves or tissues in the aligned area.
Digital imaging- It uses 2D imaging mainly, but can be uploaded in a computer.
2
DENTAL
MRI imaging- It takes a 3D image of the structures of jaw and teeth.1
2. How can dental staff be protected from excessive radiation at the workplace?
List the key points for protecting yourself, patients, and other staff. In your response,
include the ALARA principle.
Ans- ALARA (As Low As Reasonably Achievable) principle states that when radiation is
exposed to living beings or materials used by them, then the intensity should be as low as
possible. Efforts are there to improve the technology, and economic development at the same
time for better outcome. The patients can be protected efficiently by using shielding,
collimation and usage of film speeds of high intensity2. The operators and other staff can be
safe by usage of shielding, personal dosimeters. The fastest available speed film can reduce
exposure to radiation. Shielding by use of thyroid collars and covers like aprons is helpful.
Collimation is the use of a metallic shield that reduces the size of the metallic beam. Personal
Dosimators must be used by workers who are projected to 1mSv of rays annually. The
maximum limit permissible for the workers are 50 mSv. The protection of the operator with
effective means are essential. i
3. There are many different factors affecting the radiation dose and several
different ways of measuring it. List and describe three different radiation doses.
Ans- The measuring of a radiation dose is essential to examine the effect of the same on
human tissue. Like sunlight, the radiation affects an individual by considering factors like
intensity, time of exposure and skin’s sensitive nature. The radiation can be measured in a
1 Parker, J. (n.d.). Image reconstruction in radiology. (2018). DOI: https://doi.org/10.1201/9781351073363
ISBN: 9781351073363
2
DENTAL
MRI imaging- It takes a 3D image of the structures of jaw and teeth.1
2. How can dental staff be protected from excessive radiation at the workplace?
List the key points for protecting yourself, patients, and other staff. In your response,
include the ALARA principle.
Ans- ALARA (As Low As Reasonably Achievable) principle states that when radiation is
exposed to living beings or materials used by them, then the intensity should be as low as
possible. Efforts are there to improve the technology, and economic development at the same
time for better outcome. The patients can be protected efficiently by using shielding,
collimation and usage of film speeds of high intensity2. The operators and other staff can be
safe by usage of shielding, personal dosimeters. The fastest available speed film can reduce
exposure to radiation. Shielding by use of thyroid collars and covers like aprons is helpful.
Collimation is the use of a metallic shield that reduces the size of the metallic beam. Personal
Dosimators must be used by workers who are projected to 1mSv of rays annually. The
maximum limit permissible for the workers are 50 mSv. The protection of the operator with
effective means are essential. i
3. There are many different factors affecting the radiation dose and several
different ways of measuring it. List and describe three different radiation doses.
Ans- The measuring of a radiation dose is essential to examine the effect of the same on
human tissue. Like sunlight, the radiation affects an individual by considering factors like
intensity, time of exposure and skin’s sensitive nature. The radiation can be measured in a
1 Parker, J. (n.d.). Image reconstruction in radiology. (2018). DOI: https://doi.org/10.1201/9781351073363
ISBN: 9781351073363
2
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